文章题目Darkside of Technological Boom
重复年份20151203 20130713 20100520
题型小标题 9+判断 5
参考练习：剑桥雅思 5 Test3 Passage3 The return of artificial intelligence
After years in the wilderness, the term 'artificial intelligence' (AI) seems poised to make a comeback. Al was big in the 1980s but vanished in the 1990s. It re-entered public consciousness with the release of AI, a movie about a robot boy. This has ignited public debate about Al, but the term is also being used once more within the computer industry. Researchers, executives and marketing people are now using the expression without irony or inverted commas. And it is not always hype. The term is being applied, with some justification, to products that depend on technology that was originally developed by Al researchers. Admittedly, the rehabilitation of the term has a long way to go, and some firms still prefer to avoid using it. But the fact that others are
starting to use it again suggests that Al has moved on from being seen as an over-ambitious and under-achieving field of research.
The field was launched, and the term 'artificial intelligence' coined, at a conference in 1956 by a group of researchers that included Marvin Minsky, John McCarthy, Herbert Simon and Alan Newell, all of whom went on to become leading figures in the field. The expression provided an attractive but informative name for a research programme that encompassed such previously disparate fields as operations research, cybernetics, logic and computer science. The goal they shared was an attempt to capture or mimic human abilities using machines. That said, different groups of researchers attacked different problems, from speech recognition to chess playing, in different ways; Al unified the field in name only. But it was a term that captured the public imagination.
Most researchers agree that Al peaked around 1985. A public reared on science-fiction movies and excited by the growing power of computers had high expectations. For years, Al researchers had implied that a breakthrough was just around the corner. Marvin Minsky said in 1967 that within a generation the problem of creating ‘artificial intelligence' would be substantially solved. Prototypes of medical-diagnosis programs and speech recognition software appeared to be making progress. It proved to be a false dawn. Thinking computers and household robots failed to materialise, and a backlash ensued. 'There was undue optimism in the early 1980s: says David Leake, a researcher at Indiana University. 'Then when people realised these were hard problems, there was retrenchment. By the late 1980s, the term Al was being avoided by many researchers, who opted instead to align themselves with specific sub-disciplines such as neural networks, agent technology, case-based reasoning, and so on.
重复年份20151219 20140802 20111026
题型选择 4+句子配对 4+判断 4+简答 1
A Stories and poems aimed at children have an exceedingly long history: lullabies, for example, were sung in Roman times, and a few nursery games and rhymes are almost as ancient. Yet so far as written-down literature is concerned, while there were stories in print before 1700 that children often seized on when they had the chance, such as translations of Aesop’s fables, fairy-stories and popular ballads and romances, these were not aimed at young people in particular. Since the only genuinely child-oriented literature at this time would have been a few instructional works to help with reading and general knowledge, plus the odd Puritanical tract as an aid to morality, the only course for keen child readers was to read adult literature. This still occurs today, especially with adult thrillers or romances that include more exciting, graphic detail than is normally found in the literature for younger readers.
B By the middle of the 18th century there were enough eager child readers, and enough parents glad to cater to interest, for publishers to specialize in children’s books whose first aim was pleasure rather than education or morality. In Britain, a London merchant named Thomas Boreham produced Cajanus, The Swedish Giant in 1742, while the more famous John Newbery published A Little Pretty Pocket Book in 1744. Its contents—rhymes, stories, children’s games plus a free gift (‘A ball and a pincushion’)— in many ways anticipated the similar lucky-dip contents of children’s annuals this century. It is a tribute to Newbery’s flair that he hit upon a winning formula quite so quickly, to be pirated almost immediately in America.
C Such pleasing levity was not to last. Influenced by Rousseau, whose Emile (1762)decreed that all books children save Robinson Crusoe were a dangerous diversion, contemporary critics saw to it that children’s literature should be instructive and uplifting. Prominent among such voices was Mrs. Sarah Trimmer, whose magazine The Guardian of Education (1802) carried the first regular reviews of children’s books. It was she who condemned fairy-tales for their violence and general absurdity; her own stories, Fabulous Histories (1786)described talking animals who were always models of sense and decorum.
D. So the moral story for children was always threatened from within, given the way children have of drawing out entertainment from the sternest moralist. But the greatest blow to the improving children’s book was to come from an unlikely source indeed: early 19th-century interest in folklore. Both nursery rhymes, selected by James Orchard Halliwell for a folklore society in 1842, and collection of fairy-stories by the scholarly Grimm brothers, swiftly translated into English in 1823, soon rocket to popularity with the young, quickly leading to new editions, each one more child-centered than the last. From now on younger children could expect stories written for their particular interest and with the needs of their own limited experience of life kept well to the fore.
E What eventually determined the reading of older children was often not the availability of special children’s literature as such but access to books that contained characters, such as young people or animals, with whom they could more easily empathize, or action, such as exploring or fighting, that made few demands on adult maturity or understanding.
F The final apotheosis of literary childhood as something to be protected from unpleasant reality came with the arrival in the late 1930s of child-centered best-sellers intend on entertainment at its most escapist. In Britain novelist such as Enid Blyton and Richmal Crompton described children who were always free to have the most unlikely adventures, secure in the knowledge that nothing bad could ever happen to them in the end. The fact that war broke out again during her books’ greatest popularity fails to register at all in the self-enclosed world inhabited by Enid Blyton’s young characters. Reaction against such dream-worlds was inevitable after World War II, coinciding with the growth of paperback sales, children’s libraries and a new spirit of moral and social concern. Urged on by committed publishers and progressive librarians, writers slowly began to explore new areas of interest while also shifting the settings of their plots from the middle-class world to which their chiefly adult patrons had always previously belonged.
G Critical emphasis, during this development, has been divided. For some the most important task was to rid children’s books of the social prejudice and exclusiveness no longer found acceptable. Others concentrated more on the positive achievements of contemporary children’s literature. That writers of these works are now often recommended to the attentions of adult as well as
child readers echoes the 19th-century belief that children’s literature can be shared by the generations, rather than being a defensive barrier between childhood and the necessary growth towards adult understanding.
文章题目Ancient Greek Coins
The history of Ancient Greek coinage can be divided (along with most other Greek art forms) into four periods, the Archaic, the Classical, the Hellenistic and the Roman. The Archaic period extends from the introduction of coinage to the Greek world during the 7th century BC until the Persian Wars in about 480 BC. The Classical period then began, and lasted until the conquests of Alexander the Great in about 330 BC, which began the Hellenistic period, extending until the Roman absorption of the Greek world in the 1st century BC. The Greek cities continued to produce their own coins for several more centuries under Roman rule. The coins produced during this period are called Roman provincial coins or Greek Imperial Coins.
The three most important standards of the Ancient Greek monetary system were the Attic standard, based on the Athenian drachma of 4.3 grams of silver and the Corinthian standard based on the stater of 8.6 grams of silver, that was subdivided into three silver drachmas of 2.9 grams, and the Aeginetan stater or didrachm of
12.2 grams, based on a drachma of 6.1 grams. The word drachm(a) means "a handful", literally "a grasp". Drachmae were divided into six obols (from the Greek word for a spit), and six spits made a "handful". This suggests that before coinage came to be used in Greece, spits in prehistoric times were used as measures in daily transactions. In archaic/pre-numismatic times iron was valued for making durable tools and weapons, and its casting in spit form may have actually represented a form of transportable bullion, which eventually became bulky and inconvenient after the adoption of precious metals. Because of this very aspect,
Spartan legislation famously forbade issuance of Spartan coin, and enforced the continued use of iron spits so as to discourage avarice and the hoarding of wealth. In addition to its original meaning (which also gave the euphemistic diminutive "obelisk", "little spit"), the word obol (ὀβολός, obolós, or ὀβελός, obelós) was retained as a Greek word for coins of small value, still used as such in Modern Greek slang (όβολα, óvola, "monies").
The obol was further subdivided into tetartemorioi (singular tetartemorion) which represented 1/4 of an obol, or 1/24 of a drachm. This coin (which was known to have been struck in Athens, Colophon, and several other cities) is mentioned by Aristotle as the smallest silver coin :237 Various multiples of this denomination were also struck, including the trihemitetartemorion (literally three half-tetartemorioi) valued at 3/8 of an obol.